Pope Francis’ homily (here) has statements that are in contradiction to both the Bible, and in one case, Roman Catholic teaching.
Let’s take it point by point:
Pope Francis: “Under the cross Mary” gave birth to us all: She gave birth to the Church”.
Acts 2:2-4 The birth of the church happened on the day of Pentecost, ten days after Jesus’ ascension into heaven: “And suddenly there came a sound from heaven, as of a rushing mighty wind, and it filled the whole house where they were sitting. Then there appeared to them divided tongues, as of fire, and one sat upon each of them. And they were all filled with the Holy Spirit and began to speak with other tongues, as the Spirit gave them utterance.”
Pope Francis: Mary knew and lived her whole life with a pierced heart. “She followed Jesus and heard the people’s comments, sometimes for Him, sometimes against. But she was always right behind her Son. That’s why we call her the first disciple”.
EWTN Catholic teaching: “The beginning of Jesus’ mission also meant separation from his Mother, who did not always follow her son in his travels on the roads of Palestine. Jesus deliberately chose separation from his Mother and from family affection, as can be inferred from the conditions he gave his disciples for following him and for dedicating themselves to proclaiming God’s kingdom” (source)
Pope Francis said he was offering these few and simple words to help us contemplate this mystery in silence. In this moment, beneath the Cross, Mary gave birth to the Church and to all of us: “Woman”, says her Son, ‘behold your children”.
Opinion: Except that is not what Jesus said, even according to the St. Joseph’s Catholic Bible: “Seeing His mother there with the disciple whom He loved, Jesus said to His mother, “Woman here is your son”. In turn He said to the disciple, “There is your mother”. From that hour onward he took her into his home.” John 19:26-27
Finally Catholic teaching that Mary was born without sin is not found in Scripture. Mary acknowledged her need for a savior: “And Mary said: “My soul magnifies the Lord, And my spirit has rejoiced in God my Savior.” Luke 1:46-47